2019-20 4WD Ford F450, F550 Diesel 10-Lug 6" 4-Link lift kit, Stealth Monotube shocks

$5,826.00
Product No
K2338DL-FT
FREE SHIPPING Lower 48 States

Important Notes

* Some models may not sit level after install.
* Fits both gas and diesel models.
* Fits both Dually and Single Rear Wheel models.
* Front driveshaft modification is required or order driveshaft FTS92035

Quick Overview

The Ford F450 and F550 10-lug trucks demand specialty parts when modifying the suspension. Fabtech has designed a lift kit with everything needed to convert to a 4 Link front suspension. This provides less caster change throughout travel for improved street driving. Ten years of experience providing commercial and military applications makes Fabtech the right choice for these large trucks.

The Dirt Logic 4.0 Coilovers are bolted in with simple, super stout 1/4" thick steel brackets that utilize the factory coil bucket. These have a massive 4" diameter stainless steel body with 1.25 NitroSteel piston rod to handle the most aggressive driving conditions. American made coil springs are designed to handle the weight of the F450 and F550 while providing a superior ride quality. When driving at high speeds over extreme terrain the remote aluminum reservoir will dissipate heat for continuous damping.

The link arms are 2" OD heavy wall with 1/4" thick steel brackets at the axle with adjustable alignment cams. Fabtech 5 Ton Joints pivot at the frame. For over 10 years, these joints have been proven in rugged military use. They are both quiet and strong! The 4 Link Arms attach to stout 1/4” thick steel frame brackets for a solid mounting of the new suspension. The geometry of the 4 Link arms and frame brackets has been designed to provide an improved highway ride due to reduced caster change and able to tackle rough offroad conditions better than a Radius Arm suspension.

The coil springs are made in America and provide an additional 2" of wheel travel over stock. The factory long travel steering stabilizer is retained with the use of a bracket and support brace to reduce tire shimmy. Dirt Logic 2.25 shock bodies have high grade 304 Stainless Steel construction for maximum resistance to corrosion. A finely detailed machine finish to the shock body provides a stunning appearance. The piston rod is a NitroSteel® material for superior corrosion resistance over chromed piston rods. These are the best designed and performing take apart shocks you can buy and will outlast any other take apart shock on the market

  • Link Arms and Brackets
  • Dirt Logic 4.0 Coilovers
  • 1/4" thick steel track bar bracket
  • Pitman arm
  • Front and rear bump stop brackets
  • 1/4" thick steel sway bar brackets
  • Brake line brackets
  • Steering stabilizer brackets
  • Carrier bearing kit
  • Rear block kit
  • Dirt Logic 2.25 shocks

37/12.50 tires on 17-18X9 rims with 4 3/4" BS with minor trimming
37/13.50 tires on 20X9 rims with 5" BS with minor trimming

This Fabtech lift kit is covered by their FIVE SIXTY Powertrain Warranty. See Details

View 4-Link installation instructions
View installation instructions
    • Make: Ford
    • Model: F450, F550
    • Vehicle: 2019-20 F450, F550 10-Lug 6" 4-Link lift kit, Dirt Logic 4.0 Resi Coilovers, Dirt Logic 2.25 shocks
    • Drive: 4WD
    • Upsell: FTS22313 FT, FTS22314 FT, FTS92035 FT

Fabtech 6" lift kit fits following models:
2019 Ford F450 Super Duty
2020 Ford F450 Super Duty
2019 Ford F550 Super Duty
2020 Ford F550 Super Duty

© 2025 Rocky Mountain Suspension. All Rights Reserved.  |  Privacy Policy.  |  Website by Bennett Web Group